Tool attachment for sewing-machines.



PATENTED AUG. 29, 1905.

J. 0. ROLLINS. TOOL ATTACHMENT POB. SEWING MACHINES.

APPLICATION FILED FEB. Z1, 1905.

Witnesses:-

UNITED i STATES PATENT. orrion.

`TOOL ATTACHMENT FOR SEWING-MACHINES.

l Specification of Letters Patent.

Patented Aug. 29, 1905.

Application filed February 2l, 1905. Serial No. 246,807.

To all 'L1/hom, 7325 711ml/ concern:

Be it known that I, Jol-1N O. RoLLINs, a citizen of the UnitedStates,residing at Tuolumne, in the county of Tuolumne and State ofOalifornia, have invented new and useful .Improvements in ToolAttachments for Sewing-Machines, of which the following is aspecification.

My invention relates to attachments for sewing-machines, andparticularly to a form of removable tool-hanger and means fordriving thesame from the machine-treadle.

It is often desired to employ various rotary toolssuch as brushes,polishers, burnishers, abrading devices, and the likein conjunction witha sewing-machine; and it is the object of my invention to provide adetachable carrier for rotary tools which may be applied to machinesalready in use and which will drop below the table to permit of itsbeing run from the main drive-wheel without interfering with the tableor requiring changes therein and to provide a novel and eflicaciousmeans for operating the tools from the treadle of the machine andwithout necessarily running the sewing-arm.

It consists of the parts and the construction and combination of parts,as hereinafter more fully described and claimed, having reference to theaccompanying drawing, in which the figure is a representation of asewing-machine with my invention applied, the parts that are deemednovel being shown in full lines.

A represents the frame of a well-known type of sewing-machine having thetable 2, the fast pulley 3, whence power is transmitted to thesewing-arm, the crank 4, the pitman 5, and the treadle 6.

7 is aframe or hanger adapted to be clamped or otherwise removablysecured to the table and having a drop portion 8, which extends beyondand belos7 the edge of the table and carries an arbor-shaft 9. Thelatter extends at right angles to the frame 7 and is provided with afastgrooved pulley 1() in the same plane with pulley 3. to receive variousgrinding-wheels, polishers, buffers, brushes, &c.

The shaft is driven by a belt 1l, normally inactive when the machine isregularly occupied, but which is adapted to be slipped onto pulley 3when the other belt driving the sewing-arm is thrown olf. By connectingwith this drive-pulley rather than with the pulley Each end of shaft 9is adapted f above the table, which operates the sewingarm, it ispossible to use the tool attachments without running the needleconstantly.

As more power is required under some circumstances to operate thetool-shaft 9 than for ordinary sewing purposes and as the shaft shouldbe driven at very high speed, I provide the following means forincreasing the normal treadle-power of the machine: I employ asupplementary detachable treadle-arm l2, adapted to be Vpivotally hungon the outside of the vertical frame A, and a second dctachable arm 13,which may be secured to the treadle 6. Preferably the treadle-arm 12 isarranged so as to diverge from the plane of the machine-frame and carryits free end outward to afford sufficient room for the operators footwithout rubbing against the frame. By this yarrangement the operator mayuse both feet and convert a single heel-and-toe tread into a doubledirect-tread machine. The pivot-bolt 14 of the treadle is passed throughan opening in the frame-casting A and clamped fast to the said frame,asuitable bearing on each side of the latter being furnished by theplates 15. The two arms are connected by a cord 16, -passing over apulley 17, journaled on the hanger 7 at right angles to the axis of thetool-shaft 9, whereby the power of treadlearm l2 is communicated througharm 13 to `treadle 6 and thence to the drive-pulley 3. By

journaling the direction-pulley 17 on the hanger the entire device ismade very simple and compact.

This treadle attachment, as well as the toolhanger, is quickly put on or'taken off of a machine, interferes in no way with the ordinaryfunctions of the machine, and forms a handy power and time savingadjunct thereto.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is-

l. The combination with a sewing-machine and the operating-treadlethereof, of a detachable tool-shaft carrier, a direction-pulleyjournaled on said carrier, a tool-shaft on the carrier, said pulleybeingjournaled at right angles to the tool-shaft and said shaft havingitsopposite ends adapted to receive grinding or polishing tools, a fastpulley on said shaft, a drivepulley journaledin the frame of themachine, connections between said fast pulley and said drive-pulley,means for operating the latter from said treadle, a detachable treadlehaving means of attachment to the outside of the ma- IOO IIO

ing, a direction-pulley and flexible connections, supported by saidpulley, between said arm and operatingetreadle.

3. The combination with the frame-casting and operating-treadle of asewing-machine, oi'

a detachable arm arranged to be secured thereto, a treadle-arm, meansincluding a bolt passing through the frame-casting and plates on thebolt upon each side of the frame for detachably securing said arm to theside of the frame-casting, a direction-pulley and a flexible connectionpassing over said pulley between said arms.

In testimony whereof I have hereunto set my hand in presence of twosubscribing wit- HGSSGS.

JOHN O. ROLLINS.

Witnesses:

J. P. GALLAGHER, P. RfGARDNER.

